EU Court Ruling on Dublin Airport Passenger Cap Expected 15 October

Ireland’s long-running dispute over the 32 million-passenger cap at Dublin Airport is moving rapidly toward resolution. Documents reviewed by The Irish Times confirm that the Court of Justice of the European Union (CJEU) will hand down a judgment on 15 October that answers questions referred by the Irish High Court in 2024, when Aer Lingus, Ryanair and several US carriers challenged the way the Irish Aviation Authority (IAA) applied the planning-imposed limit when awarding take-off and landing slots. The cap dates back to a 2007 planning condition that assumed a third terminal would be required once annual throughput passed 32 million. In practice, the airport’s two existing terminals processed 36.4 million passengers in 2025 and are on track to exceed that again in 2026, prompting airlines to argue that the restriction is outdated and anti-competitive. While an Advocate-General’s non-binding opinion issued in February sided with the IAA’s narrow reading of the rule, the final CJEU decision will clarify whether regulators must continue to factor the cap into slot coordination. Complicating matters, legislation enacted by the Oireachtas this summer gives Transport Minister Darragh O’Brien the power to raise or abolish the cap by ministerial order. Dublin Airport operator DAA formally asked the minister last month to increase the ceiling to 40 million, and industry sources expect a decision before next April’s winter-slot process. If the minister intervenes, the CJEU verdict could be overtaken by domestic law—but until an order is signed, the court’s ruling will shape how many flights can be scheduled for summer 2027 and beyond. Business-travel stakeholders are watching closely. Multinationals with Irish operations rely on Dublin’s trans-Atlantic and intra-EU connectivity to move staff and visiting executives. A judgment that forces a hard cap could choke growth, reduce fare competition and complicate assignment planning. Conversely, if either the Minister or the court removes the limit, airlines are poised to add capacity—Ryanair has already hinted at basing additional aircraft if airport charges fall in tandem. For mobility managers, the key takeaway is that seat availability and pricing for 2027 travel will hinge on two intertwined decisions over the next few weeks. Companies should build flexibility into travel budgets and keep travellers informed about potential schedule adjustments once the legal dust settles.